Update Makefile

* Add comments.
* Add .PHONY target.
* Add `import-en-files` and `update-src-dir` targets.

Author: k-takata

Makefile

@@ -3,18 +3,51 @@ ARCHIVE_EXT = xz
 ARCHIVE_DIR = $(ARCHIVE)
 ARCHIVE_FILE = $(ARCHIVE).tar.$(ARCHIVE_EXT)
 
+VIM_SRC_DIR =
+
 INSTALL_DIR = $(ARCHIVE)-runtime
 
+.PHONY: import-en-files update-src-dir \
+	archive archive-dir release release-today test install clean distclean \
+	force-update-all force-update-po force-update-lang force-update-tutor
+
+
+# Import English files from the specified Vim source directory.
+import-en-files:
+	@if test ! -d "$(VIM_SRC_DIR)"; then echo VIM_SRC_DIR not specified; exit 1; fi
+	$(MAKE) -C "$(VIM_SRC_DIR)"/src/po/ vim.pot
+	cp "$(VIM_SRC_DIR)"/src/po/vim.pot src/po/
+	cp "$(VIM_SRC_DIR)"/runtime/doc/evim.1 \
+		"$(VIM_SRC_DIR)"/runtime/doc/vim.1 \
+		"$(VIM_SRC_DIR)"/runtime/doc/vimdiff.1 \
+		"$(VIM_SRC_DIR)"/runtime/doc/vimtutor.1 \
+		"$(VIM_SRC_DIR)"/runtime/doc/xxd.1 \
+		runtime/doc/
+	cp "$(VIM_SRC_DIR)"/runtime/tutor/tutor runtime/tutor/
+	cp "$(VIM_SRC_DIR)"/nsis/lang/english.nsi nsis/lang/
+
+# Update Vim source directory.
+update-src-dir:
+	@if test ! -d "$(VIM_SRC_DIR)"; then echo VIM_SRC_DIR not specified; exit 1; fi
+	@rm -rf $(ARCHIVE_DIR)
+	$(MAKE) test
+	$(MAKE) $(ARCHIVE_DIR)
+	cp -rf $(ARCHIVE_DIR)/* "$(VIM_SRC_DIR)"
+	rm -rf $(ARCHIVE_DIR)
+
+
 archive: $(ARCHIVE_FILE)
 
 archive-dir: $(ARCHIVE_DIR)
 
+# Create release package with the specified archive name.
 release: force-update-all
 	@rm -rf $(ARCHIVE_DIR) $(ARCHIVE_FILE)
 	$(MAKE) test
 	$(MAKE) $(ARCHIVE_FILE)
 	rm -rf $(ARCHIVE_DIR)
 
+# Create release package based on today's date.
 release-today:
 	$(MAKE) release ARCHIVE=vim-lang-ja-`date +%Y%m%d`
 
@@ -23,6 +56,7 @@ test:
 	$(MAKE) -C runtime/lang test
 	$(MAKE) -C runtime/tutor test
 
+# Install the message files into the specified (runtime) directory.
 install: test
 	mkdir -p $(INSTALL_DIR)/lang/ja/LC_MESSAGES
 	mkdir -p $(INSTALL_DIR)/lang/ja.euc-jp/LC_MESSAGES
@@ -62,10 +96,12 @@ $(ARCHIVE_DIR):
 	mkdir -p $@/runtime/lang
 	mkdir -p $@/runtime/doc
 	mkdir -p $@/runtime/tutor
+	mkdir -p $@/nsis/lang
 	cp src/po/*.po $@/src/po
 	cp runtime/lang/menu_ja*.vim $@/runtime/lang
 	cp runtime/doc/*.UTF-8.1 $@/runtime/doc
 	cp runtime/tutor/tutor.ja.* $@/runtime/tutor
+	cp nsis/lang/japanese.nsi $@/nsis/lang
 
 $(ARCHIVE).tar.gz: $(ARCHIVE_DIR)
 	tar -czf $@ $<

runtime/lang/Makefile

@@ -1,6 +1,6 @@
 MASTER_MENU = menu_ja_jp.utf-8.vim
 
-test:
+test: update
 
 update: menu_ja_jp.euc-jp.vim menu_japanese_japan.932.vim